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Description
The Bosch HSS Step Drill Bit performs smooth drilling in several diameters with one drill bit.CNC ground spiral flute enables optimised chip removal and less vibration for even drilling.Highest cutting smoothness due to axial and radial relief grinding.The step drill bit is made of HSS (high-speed steel) and coated with AlTiN (Aluminium Titan Nitride) which offers a long lifetime. Easily visible and durable markings of the hole diameter are provided by laser-marked figures in both spiral flutes. In addition, the 3-flat shank prevents slipping in the chuck and also provides powerful high-torque transmission.
